Needle-holding slide for brush-making machines.



- W.'G. LIEBI'G. NEEDLE HOLDING SLIDE FOR BRU$H MAKING MACHINES. APPLICATION rum MAR. so, 1908.

906,246. I Patented Dec. 8. 1908.

2 SHEETS-SHEET 1.

WITNESSES INVENTOR Alfarneys.

W.. G. LIE-BIG. NEEDLE HOLDING SLIDE FOR BRUSH MAKINGMAGHINES.

. prmonxonfiun MAR. 30, 190

Patented Dec. 8, 1908 2 SHEETS-SHEET z.

INVENTOR wxT EssFs UNITED sTArEs' 151mm OFFICE.

WILLIAM G. LI EBIG, or DETROIT, MICHIGAN.

NEEDLE-HOLDING SLIDE FOR BRUSH-MAKING MACHINES.

Specification of Letters Patent.

Patented Dec. s, 1908.

Application filed March 30, 1908. Serial No. 423,983.

able others skilled in the art to which it per tains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to needle holding slides for a brush making machine, and has for its object an improved device of the general type employed in the machines described and claimed in Letters Patent of the United States No. 846,583, issued to me on March 12,

= 1907, and No. 870,114 issued to me on November 5, 1907, wherein greater range as to size, and security of holding of the needle is made possible.

In the drawings :Figure 1, is a front elevation, partly in section, of the portion of a brush making and staple forming machine, to which this slide is appurtenant. Fig. 2, is a perspective of the im roved slide and of a-portion of the needle he d therein; Fig. 3, is a longitudinal sectional elevation of this. Fig. 4, is a cross section along the line a-a, Fig. 3.

Referring for a moment to Fig. 1 for sufiicient explanatory details to bring out the general function of such a slide, 1 represents the fixed supporting frame of a brush making machine, in whose upper portion is j ournaled a horizontal shaft 2, to which rotary motion is imparted by means of the fly wheel 3 and belt 4 from any convenient source of power. Keyed upon said shaft at the desired relative positions with respect to one another, are a plurality of cam wheels 5 and 6, each of which has on each face a cam track or race 7, which is located with great care with respect to the wheel itself, and to the position of the other cam races in the system. In each of these engage a roller such as 8, upon the slide piece 9, in a way to cause the vertical reciprocation within its carefully restricted path of travel of the other slides. Of these other slides one, 10, is adapted, by means of the grapple 10 and its associated parts, to advance the wire inproper lengths for shearing off and bending into the form of staples. The vertical reciprocation of slide 11, causes the tuftesegregating carrier, from a portion of which a pin projects into the horizontal runway 11 to oscillate in the manner described in the patents referred to.

In place of, and as an improvement upon the needle holding slide therein disclosed, I have devised the slide 9 herein illustrated,

whose body portion instead of being solid,

except for the specially machined hole for the insertion of the needle, so that it would engage against an eccentric adjusting wheel, there shown, has its lower portion hollowed out to provide room for the movement, within certain limits, of the lever 12, which is pivoted at 12 so as to extend lengthwise of the slide 9. The degree to which its lower or shorter end is projected within the body of the slide and toward its upper or front surface, is regulated by the adjusting screw 13, which engages against its free end. The forward end 12 .of the lever has an upwardly projecting head, whose angular cross section is as illustrated in Fig. 4.- When, b

means of the screw 13, the end 12 of the lever is caused to rise, the pointed or beveled portion 12 is forced strongly between the epending lower points 14 and 15 of the jaws 14 and 15, which are pivoted at 14 and 15 in the solid body portion of the slide.

As the angularity of their under faces is slightly different from that on the beveled point 12 of the lever 12, a strong upper res sure thereupon, such as can be brought a out by the use of the screw 13, results in pressing the point 12 as'far between the parts 14 and 15 as possible, and forcing them outward. This in turn forces the upper or jaw proper portions toward each other, and in position to very tightly clamp the needle 16 inserted therein, either a very fine one such as is used in driving relatively fine staples, or a large heavy one.

As in the Letters Patent referred to, the' upper end of the needle engages against an eccentric toothed cam 17 between the irregularities of whose notched periphery the head of the needle 1 6 is held firmly in place, so that if a very small portion of the needle is broken off its loss as to length may be compensated 1 for by turning the cam so as to take up the space above the line of the jaw, pieces 14 and 15 across which the needle in its original length extends.

What I claim is 1. A needle carrying slide, having, in combination With its supporting body portion,a

pair of pivoted jaws between the nee= dle is adapted to engage,- and a lever adapted to be adjusted to any one of a variety of posi tions with respect thereto andv to the body portion, whereby the degree of its pressure upon said jaws and their consequent seizure of an interposed needle may be varied, substantially as described.

2. A needle carrying slide for brush making and staple forming machines, having, in combination with its unitary body portion, a lever pivoted therein, a pair of pivoted jaws adapted to be forced against an interposed object by the pressure of said lever, and

- means for varying the degree of ressure of said lever, substantially as descri ed.

3. A needle carrying slide, comprising a body portion, pivoted jaws between which a needle may engage, andmeans for forcing said jaws into holding position, substantially as described;

4. In a needle carrying slide, the combina tion of a body portion, a pair of needle holding jaws pivotally supported near one end thereof, means for causing said jaws to close with the desired degree of pressure, and adjustable means against which the end of the needle is adapted to abut whereby its extent along the body portion may be varied, substantially as described.

In testimony whereof, I sign this specification in the presence of two Witnesses.

' WVILLIAM G. LIEBIG.

Witnesses:

WILLIAM M. SWAN, V. C. SPRATT. 

